A new estimate has some good news, but some regions could still be hard hit.
Hundreds of archaeologists pooled their data to get the big picture.
Step one: realize we’re not alone.
Ancient climate change was to blame.
These 208 minerals were all caused by human activities
A new study reveals cats' connection to more than 100 animal extinctions
Bats can adapt by switching senses, but that's not good enough
It's a green, green world
Species loss rate is 100 times greater than the expected rate
Scientists debate the start date of 'the age of man'
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